استفاده از ضایعات میوه آلبالو به عنوان جاذب رنگ از محلول آبی

نوع مقاله: مقاله علمی پژوهشی

نویسندگان

1 دانشگاه آزاد اسلامی،واحد شاهرود، گروه مهندسی شیمی، شاهرود، ایران

2 دانشگاه سمنان، دانشکده مهندسی شیمی، نفت و گاز، گروه مهندسی شیمی، سمنان، ایران

چکیده

در این مطالعه امکان پذیری استفاده از ساقه میوه آلبالو به عنوان جاذب در دسترس ارزان قیمت برای جذب رنگ بریلیانت گرین از محلول آبی مورد بررسی قرار گرفت. مطالعه جذب در یک فرآیند ناپیوسته با بررسی تاثیر پارامترهای pH، زمان تماس، غلظت رنگزا، مقدار جاذب و دما انجام شد. بیشترین مقدار حذف در 7=pH مشاهده شد. داده های تعادلی توسط ایزوترم های فروندلیچ، لانگمیر و تمکین ارزیابی شدند. ظرفیت جذب ماکزیمم mg/g32/9 بدست آمد. مدل سینتیکی شبه درجه دوم بهترین مدل شناخته شد. پارامترهای ترمودینامیکی مانند تغییرات انرژی آزاد استاندارد گیبس (〖∆G〗^0)، تغییرات آنتالپی استاندارد (〖∆H〗^0) و تغییرات آنتروپی استاندارد (〖∆S〗^0) اندازه گیری شدند و طبیعت فرآیند جذب پیش بینی شد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Application of Sour Cherry Waste as Adsorbent of Dye from Aqueous Solution

نویسندگان [English]

  • Faranak Molakazemi 1
  • Mehdi Parvini 2
چکیده [English]

This study examined the feasibility of using stem of sour cherry as available low cost adsorbent for Brilliant Green dye (BG) adsorption from aqueous solution. Adsorption studies were conducted on a batch process by observing the effects of pH, contact time, dye concentration of BG, amounts of adsorbents and temperature. Maximum color removal was observed at pH=7. The equilibrium data was analyzed by the Freundlich, Langmuir and Temkin isotherms. The maximum adsorption capacity was found to be 9.32 mg/g. The pseudo-second-order kinetics was the best model. Thermodynamic parameters, such as standard Gibbs free energy changes (〖∆G〗^0), standard enthalpy changes (〖∆H〗^0) and standard entropy changes (〖∆S〗^0) were computed to predict the nature of adsorption process.

کلیدواژه‌ها [English]

  • Stems of sour cherry
  • Brilliant Green
  • Dye Removal
  • Adsorption
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